6 IZA Discussion Papers
IZA Discussion Paper No. 14938
IZA Discussion Paper No. 13769
IZA Discussion Paper No. 12066
IZA Discussion Paper No. 9899
IZA Discussion Paper No. 8698
Published in Journal of Economic Behavior and Organization, 2017. 142, 509-539
IZA Discussion Paper No. 7484
publiished in: Economic Inquiry, 2014, 52(3), 974-993.